Hershel Walker is a pro football star. He has a personality Disorder called dissociative identity disorder. It is a multiple personality disorder. Hershel was angry, unhappy, sad, and he didn‘t know why. I think we all get that way sometimes in our lives. Hershel did not learn about his order until 10 years ago according to CNN news. Sometimes he would threaten his wife and his personality would switch. He could be violent and he could be sweet.